612132313 has 4 divisors (see below), whose sum is σ = 659219428. Its totient is φ = 565045200.

The previous prime is 612132307. The next prime is 612132347. The reversal of 612132313 is 313231216.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 200732224 + 411400089 = 14168^2 + 20283^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612132313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612132383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23543538 + ... + 23543563.

It is an arithmetic number, because the mean of its divisors is an integer number (164804857).

Almost surely, 2^612132313 is an apocalyptic number.

It is an amenable number.

612132313 is a deficient number, since it is larger than the sum of its proper divisors (47087115).

612132313 is a wasteful number, since it uses less digits than its factorization.

612132313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47087114.

The product of its digits is 648, while the sum is 22.

The square root of 612132313 is about 24741.3078271946. The cubic root of 612132313 is about 849.0796557527.

Adding to 612132313 its reverse (313231216), we get a palindrome (925363529).

The spelling of 612132313 in words is "six hundred twelve million, one hundred thirty-two thousand, three hundred thirteen".